comparison = "revpairwise"

[ASKurz]

Would it be possible to add a comparison = "revpairwise" option for the compare_levels() function?

[mjskay]

Does comparison = emmeans_comparison("revpairwise") do what you're looking for?

[ASKurz]

Yep, that's the contrast I was looking for.

[mjskay]

Is that sufficient for what you need? If so I'll close. Though I suppose it couldn't hurt to have a shortcut for it either, happy to take a PR if you're interested. Relevant bit would be around here:

tidybayes/R/compare_levels.R

Line 9 in d777de6

comparison_types = within(list(), {

[ASKurz]

It would be nice to have the "revpairwise" option available without needing to call the emmeans package, but if you have reasons to keep it as is, I won't push further.

[mjskay]

I'd be happy to have it, though I don't have much time atm so the fastest route would be if someone else made a PR ;)

[salwahmch]

Hello,

I am new to the package and, under the supervision of @katossky / @JMeyer31, I would like to solve this issue as part of an assignment at the ENSAI school of statistical engineering (France).

I have read the general contribution guidelines from GitHub (https://opensource.guide/how-to-contribute/) and will try to be as autonomous as possible, but I may ask for guidance from time to time.

If any maintainer thinks this issue is too ambitious for a beginner, please let me know, and if possible, suggest a different issue where my help may be more useful.

Looking forward to contributing!